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* | Added support to migrate containersAdrian Reber2019-06-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds an option to the checkpoint command to export a checkpoint into a tar.gz file as well as importing a checkpoint tar.gz file during restore. With all checkpoint artifacts in one file it is possible to easily transfer a checkpoint and thus enabling container migration in Podman. With the following steps it is possible to migrate a running container from one system (source) to another (destination). Source system: * podman container checkpoint -l -e /tmp/checkpoint.tar.gz * scp /tmp/checkpoint.tar.gz destination:/tmp Destination system: * podman pull 'container-image-as-on-source-system' * podman container restore -i /tmp/checkpoint.tar.gz The exported tar.gz file contains the checkpoint image as created by CRIU and a few additional JSON files describing the state of the checkpointed container. Now the container is running on the destination system with the same state just as during checkpointing. If the container is kept running on the source system with the checkpoint flag '-R', the result will be that the same container is running on two different hosts. Signed-off-by: Adrian Reber <areber@redhat.com>
* | Added helper functions for container migrationAdrian Reber2019-06-03
|/ | | | | | | | This adds a couple of function in structure members needed in the next commit to make container migration actually work. This just splits of the function which are not modifying existing code. Signed-off-by: Adrian Reber <areber@redhat.com>
* libpod: prefer WaitForFile to pollingGiuseppe Scrivano2019-05-21
| | | | | | | replace two usage of kwait.ExponentialBackoff in favor of WaitForFile that uses inotify when possible. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Use standard remove functions for removing pod ctrsMatthew Heon2019-05-10
| | | | | | | Instead of rewriting the logic, reuse the standard logic we use for removing containers, which is much better tested. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* When refreshing after a reboot, force lock allocationMatthew Heon2019-05-06
| | | | | | | | | | | | | | After a reboot, when we refresh Podman's state, we retrieved the lock from the fresh SHM instance, but we did not mark it as allocated to prevent it being handed out to other containers and pods. Provide a method for marking locks as in-use, and use it when we refresh Podman state after a reboot. Fixes #2900 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Small code fixMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Address review comments on restart policyMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add a restart event, and make one during restart policyMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Restart policy should not run if a container is runningMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Move to using constants for valid restart policy typesMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add support for retry count with --restart flagMatthew Heon2019-05-03
| | | | | | | | | The on-failure restart option supports restarting only a given number of times. To do this, we need one additional field in the DB to track restart count (which conveniently fills a field in Inspect we weren't populating), plus some plumbing logic. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add container restart policy to Libpod & PodmanMatthew Heon2019-05-03
| | | | | | | This initial version does not support restart count, but it works as advertised otherwise. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add a StoppedByUser field to the DBMatthew Heon2019-05-03
| | | | | | | | This field indicates that a container was explciitly stopped by an API call, and did not exit naturally. It's used when implementing restart policy for containers. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Merge pull request #3039 from mheon/podman_initOpenShift Merge Robot2019-05-02
|\ | | | | Add podman init command
| * Add basic structure of podman init commandMatthew Heon2019-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | As part of this, rework the number of workers used by various Podman tasks to match original behavior - need an explicit fallthrough in the switch statement for that block to work as expected. Also, trivial change to Podman cleanup to work on initialized containers - we need to reset to a different state after cleaning up the OCI runtime. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | container: drop rootless checkGiuseppe Scrivano2019-05-01
|/ | | | | | | we don't need to treat the rootless case differently now that we use a single user namespace. Signed-off-by: Giuseppe Scrivano <giuseppe@scrivano.org>
* Merge pull request #2501 from mtrmac/fixed-hook-orderOpenShift Merge Robot2019-04-14
|\ | | | | RFC: Make hooks sort order locale-independent
| * Potentially breaking: Make hooks sort order locale-independentMiloslav Trmač2019-04-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't sort OCI hooks using the locale collation order; it does not make sense for the same system-wide directory to be interpreted differently depending on the user's LC_COLLATE setting, and the language-specific collation order can even change over time. Besides, the current collation order determination code has never worked with the most common LC_COLLATE values like en_US.UTF-8. Ideally, we would like to just order based on Unicode code points to be reliably stable, but the existing implementation is case-insensitive, so we are forced to rely on the unicode case mapping tables at least. (This gives up on canonicalization and width-insensitivity, potentially breaking users who rely on these previously documented properties.) Signed-off-by: Miloslav Trmač <mitr@redhat.com>
* | Merge pull request #2913 from mheon/get_instead_of_lookupOpenShift Merge Robot2019-04-12
|\ \ | | | | | | Use GetContainer instead of LookupContainer for full ID
| * | Use GetContainer instead of LookupContainer for full IDMatthew Heon2019-04-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All IDs in libpod are stored as a full container ID. We can get a container by full ID faster with GetContainer (which directly retrieves) than LookupContainer (which finds a match, then retrieves). No reason to use Lookup when we have full IDs present and available. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | | Expand debugging for container cleanup errorsMatthew Heon2019-04-11
|/ / | | | | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* / Implement podman-remote rmJhon Honce2019-04-09
|/ | | | | | | | | * refactor command output to use one function * Add new worker pool parallel operations * Implement podman-remote umount * Refactored podman wait to use printCmdOutput() Signed-off-by: Jhon Honce <jhonce@redhat.com>
* Switch Libpod over to new explicit named volumesMatthew Heon2019-04-04
| | | | | | | | | | | | | This swaps the previous handling (parse all volume mounts on the container and look for ones that might refer to named volumes) for the new, explicit named volume lists stored per-container. It also deprecates force-removing volumes that are in use. I don't know how we want to handle this yet, but leaving containers that depend on a volume that no longer exists is definitely not correct. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* userns: do not use an intermediate mount namespaceGiuseppe Scrivano2019-03-29
| | | | | | | | | | | | | | We have an issue in the current implementation where the cleanup process is not able to umount the storage as it is running in a separate namespace. Simplify the implementation for user namespaces by not using an intermediate mount namespace. For doing it, we need to relax the permissions on the parent directories and allow browsing them. Containers that are running without a user namespace, will still maintain mode 0700 on their directory. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* podman health check phase3baude2019-03-22
| | | | | | | | | | | | | | | | podman will not start a transient service and timer for healthchecks. this handles the tracking of the timing for health checks. added the 'started' status which represents the time that a container is in its start-period. the systemd timing can be disabled with an env variable of DISABLE_HC_SYSTEMD="true". added filter for ps where --filter health=[starting, healthy, unhealthy] can now be used. Signed-off-by: baude <bbaude@redhat.com>
* ps: fix segfault if the store is not initializedGiuseppe Scrivano2019-03-19
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Make sure buildin volumes have the same ownership and permissions as imageDaniel J Walsh2019-03-15
| | | | | | | | | | | | When creating a new image volume to be mounted into a container, we need to make sure the new volume matches the Ownership and permissions of the path that it will be mounted on. For example if a volume inside of a containre image is owned by the database UID, we want the volume to be mounted onto the image to be owned by the database UID. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* container: check containerInfo.Config before accessing itGiuseppe Scrivano2019-03-15
| | | | | | | | | check that containerInfo.Config is not nil before trying to access it. Closes: https://github.com/containers/libpod/issues/2654 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Add event on container deathMatthew Heon2019-03-13
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add event logging to libpod, even display to podmanbaude2019-03-11
| | | | | | | | | | | | | | | | | In lipod, we now log major events that occurr. These events can be displayed using the `podman events` command. Each event contains: * Type (container, image, volume, pod...) * Status (create, rm, stop, kill, ....) * Timestamp in RFC3339Nano format * Name (if applicable) * Image (if applicable) The format of the event and the varlink endpoint are to not be considered stable until cockpit has done its enablement. Signed-off-by: baude <bbaude@redhat.com>
* errors: fix error cause comparisonGiuseppe Scrivano2019-03-11
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod/container_internal: Split locale at the first dot, etc.W. Trevor King2019-03-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're going to feed this into Go's BCP 47 language parser. Language tags have the form [1]: language ["-" script] ["-" region] *("-" variant) *("-" extension) ["-" privateuse] and locales have the form [2]: [language[_territory][.codeset][@modifier]] The modifier is useful for collation, but Go's language-based API [3] does not provide a way for us to supply it. This code converts our locale to a BCP 47 language by stripping the dot and later and replacing the first underscore, if any, with a hyphen. This will avoid errors like [4]: WARN[0000] failed to parse language "en_US.UTF-8": language: tag is not well-formed when feeding language.Parse(...). [1]: https://tools.ietf.org/html/bcp47#section-2.1 [2]: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_02 [3]: https://github.com/golang/go/issues/25340 [4]: https://github.com/containers/libpod/issues/2494 Signed-off-by: W. Trevor King <wking@tremily.us>
* Append hosts to dependency container's /etc/hosts filePeter Hunt2019-03-05
| | | | | | Before, any container with a netNS dependency simply used its dependency container's hosts file, and didn't abide its configuration (mainly --add-host). Fix this by always appending to the dependency container's hosts file, creating one if necessary. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Don't start running dependenciesPeter Hunt2019-02-19
| | | | | | Before, a container being run or started in a pod always restarted the infra container. This was because we didn't take running dependencies into account. Fix this by filtering for dependencies in the running state. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* OpenTracing support added to start, stop, run, create, pull, and psSebastian Jug2019-02-18
| | | | | | Drop context.Context field from cli.Context Signed-off-by: Sebastian Jug <sejug@redhat.com>
* pod infra container is started before a container in a pod is run, started, ↵Peter Hunt2019-02-15
| | | | | | | | | | or attached. Prior, a pod would have to be started immediately when created, leading to confusion about what a pod state should be immediately after creation. The problem was podman run --pod ... would error out if the infra container wasn't started (as it is a dependency). Fix this by allowing for recursive start, where each of the container's dependencies are started prior to the new container. This is only applied to the case where a new container is attached to a pod. Also rework container_api Start, StartAndAttach, and Init functions, as there was some duplicated code, which made addressing the problem easier to fix. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Fix volume handling in podmanDaniel J Walsh2019-02-14
| | | | | | | | | | | | | | | | | | iFix builtin volumes to work with podman volume Currently builtin volumes are not recored in podman volumes when they are created automatically. This patch fixes this. Remove container volumes when requested Currently the --volume option on podman remove does nothing. This will implement the changes needed to remove the volumes if the user requests it. When removing a volume make sure that no container uses the volume. Signed-off-by: Daniel J Walsh dwalsh@redhat.com Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Retain a copy of container exit file on cleanupMatthew Heon2019-02-12
| | | | | | | | | | | | | | | | | | When cleaning up containers, we presently remove the exit file created by Conmon, to ensure that if we restart the container, we won't have conflicts when Conmon tries writing a new exit file. Unfortunately, we need to retain that exit file (at least until we get a workable events system), so we can read it in cases where the container has been removed before 'podman run' can read its exit code. So instead of removing it, rename it, so there's no conflict with Conmon, and we can still read it later. Fixes: #1640 Signed-off-by: Matthew Heon <mheon@redhat.com>
* Preserve exited state across rebootMatthew Heon2019-02-05
| | | | | | | | | | | | | Instead of unconditionally resetting to ContainerStateConfigured after a reboot, allow containers in the Exited state to remain there, preserving their exit code in podman ps after a reboot. This does not affect the ability to use and restart containers after a reboot, as the Exited state can be used (mostly) interchangeably with Configured for starting and managing containers. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* podman-remote inspectbaude2019-01-18
| | | | | | base enablement of the inspect command. Signed-off-by: baude <bbaude@redhat.com>
* Ensure that wait exits on state transitionMatthew Heon2019-01-16
| | | | | | | | | | | When waiting for a container, there is a long interval between status checks - plenty long enough for the container in question to start, then subsequently be cleaned up and returned to Created state to be restarted. As such, we can't wait on container state to go to Stopped or Exited - anything that is not Running or Paused indicates the container is dead. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Move all libpod/ JSON references over to jsoniterMatthew Heon2019-01-10
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* hooks: Add pre-create hooks for runtime-config manipulationW. Trevor King2019-01-08
| | | | | | | | | | | | | | | | | | | | | | | There's been a lot of discussion over in [1] about how to support the NVIDIA folks and others who want to be able to create devices (possibly after having loaded kernel modules) and bind userspace libraries into the container. Currently that's happening in the middle of runc's create-time mount handling before the container pivots to its new root directory with runc's incorrectly-timed prestart hook trigger [2]. With this commit, we extend hooks with a 'precreate' stage to allow trusted parties to manipulate the config JSON before calling the runtime's 'create'. I'm recycling the existing Hook schema from pkg/hooks for this, because we'll want Timeout for reliability and When to avoid the expense of fork/exec when a given hook does not need to make config changes [3]. [1]: https://github.com/opencontainers/runc/pull/1811 [2]: https://github.com/opencontainers/runc/issues/1710 [3]: https://github.com/containers/libpod/issues/1828#issuecomment-439888059 Signed-off-by: W. Trevor King <wking@tremily.us>
* Convert pods to SHM locksMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Convert containers to SHM lockingMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Log container command before starting the containerMatthew Heon2019-01-02
| | | | | | | Runc does not produce helpful error messages when the container's command is not found, so print the command ourselves. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Fixes to handle /dev/shm correctly.Daniel J Walsh2018-12-24
| | | | | | | | | | | | | | | | | | We had two problems with /dev/shm, first, you mount the container read/only then /dev/shm was mounted read/only. This is a bug a tmpfs directory should be read/write within a read-only container. The second problem is we were ignoring users mounted /dev/shm from the host. If user specified podman run -d -v /dev/shm:/dev/shm ... We were dropping this mount and still using the internal mount. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Switch all referencs to image.ContainerConfig to image.ConfigDaniel J Walsh2018-12-21
| | | | | | This will more closely match what Docker is doing. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Prevent a second lookup of user for image volumesMatthew Heon2018-12-11
| | | | | | | | | | Instead of forcing another user lookup when mounting image volumes, just use the information we looked up when we started generating the spec. This may resolve #1817 Signed-off-by: Matthew Heon <mheon@redhat.com>
* Fix errors where OCI hooks directory does not existMatthew Heon2018-12-07
| | | | Signed-off-by: Matthew Heon <mheon@redhat.com>
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